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2In receiving by serial interface, printing data is omitted or printing operation is not performed.
Are RxD and SSD of Q3 as specified in Figure
No Replace the Q2.
Yes Are, WR, and BUS signals of Q3 pin 3 as specified in Figure
542ns
WR
5V
0V
5V
0V
|
| Figure | ||
No | Replace the Q3. | |||
Yes | Is the level of a BUS signals at Q7 pins | |||
| WR | signal is started? | ||
No | Replace the Q7. | |||
Yes | Is 4 pin of Q6 identical to |
| signal in Figure | |
WR | ||||
No | Replace the Q6. | |||
Yes | Check Q501 in the SDDV PCB. |
C – 10